<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>display</title>
    <style>
body{
   color:red;
}

    </style>
</head>
<body>
<h1>hello sock!</h1>
<div>我是块级元素</div>
<div>我是块级元素</div>
</body>
</html>